ULTIMATE CAL REGIONAL
PHLEBOTOMY MIDTERM
PREP 200 HIGH YIELD Q and
A WITH RATIONALES
1.
What is the most critical step in the phlebotomy procedure?
A. Choosing the right needle gauge
B. Positive patient identification
C. Using the correct order of draw
D. Applying the tourniquet tightly
Rationale: Misidentification can lead to fatal transfusion
reactions or incorrect diagnoses; it is the foundation of patient
safety.
2. Which vein is the first choice for venipuncture in the M-shaped or
H-shaped pattern?
A. Cephalic vein
B. Basilic vein
C. Median cubital vein
D. Radial vein
Rationale: The median cubital is well-anchored, less painful, and
further from nerves and arteries compared to others.
3. A patient is allergic to alcohol. What is an appropriate antiseptic
for a routine blood draw?
A. Povidone-iodine or Chlorhexidine
B. Hydrogen peroxide
C. Sterile water
D. Antibacterial soap
Rationale: If isopropyl alcohol is contraindicated, iodine or
chlorhexidine are the standard medical alternatives for site
disinfection.
4. How long can a tourniquet be left on a patient’s arm?
A. No more than 1 minute
B. 2 minutes
C. 3 minutes
D. 5 minutes
, Rationale: Leaving it on longer than 60 seconds causes
hemoconcentration and may alter lab results like potassium and
protein levels.
5. What is the correct "Order of Draw" for the following tubes:
Lavender, Light Blue, Green, Red?
A. Red, Green, Lavender, Light Blue
B. Light Blue, Red, Green, Lavender
C. Lavender, Green, Red, Light Blue
D. Light Blue, Green, Red, Lavender
Rationale: According to CLSI standards, citrate (Light Blue)
comes first, followed by serum (Red), heparin (Green), and EDTA
(Lavender) to prevent additive cross-contamination.
6. Which tube is used for a PT (Prothrombin Time) test?
A. Lavender top
B. Red top
C. Light Blue top
D. Gray top
Rationale: PT is a coagulation test, and the Light Blue tube
contains sodium citrate, which preserves clotting factors.
7. What is the purpose of the "Bevel" on a needle?
A. To attach to the syringe
B. To allow the needle to slip into the skin with minimal
pain
C. To prevent the tube from leaking
D. To hold the safety device
Rationale: The bevel is the slanted tip of the needle; it must
always face UP during insertion.
8. Which additive is found in a Lavender top tube?
A. Sodium Citrate
B. Heparin
C. EDTA
D. Sodium Fluoride
Rationale: EDTA is an anticoagulant that preserves cell
morphology, making it ideal for CBC (Complete Blood Count)
tests.
9. A phlebotomist notices a hematoma forming during the draw.
What is the immediate action?
A. Speed up the draw to finish
, B. Release the tourniquet, remove the needle, and apply
firm pressure
C. Ask the patient to pump their fist
D. Adjust the needle depth
Rationale: A hematoma indicates blood is leaking into the tissue.
The procedure must stop immediately to prevent further injury.
10. What is the proper angle of insertion for a standard
venipuncture?
A. 5–10 degrees
B. 15–30 degrees
C. 45 degrees
D. 90 degrees
Rationale: A 15–30 degree angle is sufficient to enter the vein
without going through it or hitting the bone.
11. Which of the following is an example of "Informed Consent"?
A. A patient grants permission after being told the risks
and benefits of the procedure.
B. A patient extends their arm for the draw.
C. A patient is unconscious in the ER.
D. A minor's teacher signs for them.
Rationale: Informed consent requires the patient to understand
exactly what is happening. Extending the arm is "Implied
Consent."
12.What is the most common gauge needle used for routine adult
venipuncture?
A. 18 gauge
B. 21 gauge
C. 23 gauge
D. 25 gauge
Rationale: 21 gauge is the standard size that provides good flow
without causing excessive hemolysis.
13.Which tube contains a "Glycolytic Inhibitor"?
A. Light Blue
B. Green
C. Gray
D. Lavender
Rationale: The Gray tube contains Sodium Fluoride, which
prevents the breakdown of glucose (glycolysis).
, 14.What does the term "Phlebotomy" literally mean?
A. To cut into a vein
B. To study the blood
C. To stop a bleed
D. To measure blood pressure
Rationale: Derived from the Greek "phlebos" (vein) and "tome"
(incision/cutting).
15. What is the first thing a phlebotomist should do if they accidentally
stick themselves with a used needle?
A. Call the supervisor
B. Wash the site with soap and water for at least 15
minutes
C. Put a bandage on it
D. Go to the emergency room immediately
Rationale: Immediate decontamination is the priority before
reporting and follow-up testing.
16.Which department performs a CBC?
A. Chemistry
B. Coagulation
C. Hematology
D. Microbiology
Rationale: Hematology is the study of blood cells and their
formation.
17. What is "Hemolysis"?
A. Clotting of the blood
B. High blood sugar
C. Rupturing of red blood cells
D. Fainting during a draw
Rationale: Hemolysis can be caused by using too small a needle
or shaking the tubes too vigorously, leading to inaccurate results.
18. Which of these is a symptom of "Syncope"?
A. Paleness, sweating, and dizziness
B. Rapid talking
C. High blood pressure
D. Increased appetite
Rationale: Syncope is the medical term for fainting; these are the
classic warning signs.
PHLEBOTOMY MIDTERM
PREP 200 HIGH YIELD Q and
A WITH RATIONALES
1.
What is the most critical step in the phlebotomy procedure?
A. Choosing the right needle gauge
B. Positive patient identification
C. Using the correct order of draw
D. Applying the tourniquet tightly
Rationale: Misidentification can lead to fatal transfusion
reactions or incorrect diagnoses; it is the foundation of patient
safety.
2. Which vein is the first choice for venipuncture in the M-shaped or
H-shaped pattern?
A. Cephalic vein
B. Basilic vein
C. Median cubital vein
D. Radial vein
Rationale: The median cubital is well-anchored, less painful, and
further from nerves and arteries compared to others.
3. A patient is allergic to alcohol. What is an appropriate antiseptic
for a routine blood draw?
A. Povidone-iodine or Chlorhexidine
B. Hydrogen peroxide
C. Sterile water
D. Antibacterial soap
Rationale: If isopropyl alcohol is contraindicated, iodine or
chlorhexidine are the standard medical alternatives for site
disinfection.
4. How long can a tourniquet be left on a patient’s arm?
A. No more than 1 minute
B. 2 minutes
C. 3 minutes
D. 5 minutes
, Rationale: Leaving it on longer than 60 seconds causes
hemoconcentration and may alter lab results like potassium and
protein levels.
5. What is the correct "Order of Draw" for the following tubes:
Lavender, Light Blue, Green, Red?
A. Red, Green, Lavender, Light Blue
B. Light Blue, Red, Green, Lavender
C. Lavender, Green, Red, Light Blue
D. Light Blue, Green, Red, Lavender
Rationale: According to CLSI standards, citrate (Light Blue)
comes first, followed by serum (Red), heparin (Green), and EDTA
(Lavender) to prevent additive cross-contamination.
6. Which tube is used for a PT (Prothrombin Time) test?
A. Lavender top
B. Red top
C. Light Blue top
D. Gray top
Rationale: PT is a coagulation test, and the Light Blue tube
contains sodium citrate, which preserves clotting factors.
7. What is the purpose of the "Bevel" on a needle?
A. To attach to the syringe
B. To allow the needle to slip into the skin with minimal
pain
C. To prevent the tube from leaking
D. To hold the safety device
Rationale: The bevel is the slanted tip of the needle; it must
always face UP during insertion.
8. Which additive is found in a Lavender top tube?
A. Sodium Citrate
B. Heparin
C. EDTA
D. Sodium Fluoride
Rationale: EDTA is an anticoagulant that preserves cell
morphology, making it ideal for CBC (Complete Blood Count)
tests.
9. A phlebotomist notices a hematoma forming during the draw.
What is the immediate action?
A. Speed up the draw to finish
, B. Release the tourniquet, remove the needle, and apply
firm pressure
C. Ask the patient to pump their fist
D. Adjust the needle depth
Rationale: A hematoma indicates blood is leaking into the tissue.
The procedure must stop immediately to prevent further injury.
10. What is the proper angle of insertion for a standard
venipuncture?
A. 5–10 degrees
B. 15–30 degrees
C. 45 degrees
D. 90 degrees
Rationale: A 15–30 degree angle is sufficient to enter the vein
without going through it or hitting the bone.
11. Which of the following is an example of "Informed Consent"?
A. A patient grants permission after being told the risks
and benefits of the procedure.
B. A patient extends their arm for the draw.
C. A patient is unconscious in the ER.
D. A minor's teacher signs for them.
Rationale: Informed consent requires the patient to understand
exactly what is happening. Extending the arm is "Implied
Consent."
12.What is the most common gauge needle used for routine adult
venipuncture?
A. 18 gauge
B. 21 gauge
C. 23 gauge
D. 25 gauge
Rationale: 21 gauge is the standard size that provides good flow
without causing excessive hemolysis.
13.Which tube contains a "Glycolytic Inhibitor"?
A. Light Blue
B. Green
C. Gray
D. Lavender
Rationale: The Gray tube contains Sodium Fluoride, which
prevents the breakdown of glucose (glycolysis).
, 14.What does the term "Phlebotomy" literally mean?
A. To cut into a vein
B. To study the blood
C. To stop a bleed
D. To measure blood pressure
Rationale: Derived from the Greek "phlebos" (vein) and "tome"
(incision/cutting).
15. What is the first thing a phlebotomist should do if they accidentally
stick themselves with a used needle?
A. Call the supervisor
B. Wash the site with soap and water for at least 15
minutes
C. Put a bandage on it
D. Go to the emergency room immediately
Rationale: Immediate decontamination is the priority before
reporting and follow-up testing.
16.Which department performs a CBC?
A. Chemistry
B. Coagulation
C. Hematology
D. Microbiology
Rationale: Hematology is the study of blood cells and their
formation.
17. What is "Hemolysis"?
A. Clotting of the blood
B. High blood sugar
C. Rupturing of red blood cells
D. Fainting during a draw
Rationale: Hemolysis can be caused by using too small a needle
or shaking the tubes too vigorously, leading to inaccurate results.
18. Which of these is a symptom of "Syncope"?
A. Paleness, sweating, and dizziness
B. Rapid talking
C. High blood pressure
D. Increased appetite
Rationale: Syncope is the medical term for fainting; these are the
classic warning signs.
